Bulletin d’avalanche

South Coast

Mar 12 – 13, 2021Avalanche Canada
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Archivé · expiré 6 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Lingering wind slabs remain a concern at upper elevations, especially on northerly aspects. Watch for denser, deeper drifts near ridge-crests and rollovers.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. 

Confidence

Moderate - Confidence is due to a stable weather pattern with little change expected.

Weather Forecast

THURSDAY NIGHT - Mainly clear / moderate southwest wind / alpine low temperature near -1 

FRIDAY - A mix of sun and cloud / light to moderate west wind / alpine high temperature near 0 / freezing level 1500 m

SATURDAY - Mainly sunny / moderate to strong south wind / alpine high temperature near 2 / freezing level 2400 m

SUNDAY - A mix of sun and cloud / moderate to strong south wind / alpine high temperature near 0 / freezing level 2000 m

Avalanche Summary

Wind slabs remain possible to trigger, particularly on northerly aspects in the alpine. Large cornices remain a concern, especially during the heat of the day.

There were no new avalanches reported on Tuesday or Wednesday.

On Monday, there were a few size 1 natural wet loose avalanches reported.

Snowpack Summary

Wind slabs can be found on leeward slopes at upper elevations and may remain possible to trigger. Solar aspects likely have a crust on the surface, and soft, dry snow can likely be found in sheltered, shaded areas. Massive cornices exist on ridgelines, which can act as triggers on slopes below. 

Below the recent snow, the snowpack consists of a series of rain crusts and settled snow that is well-bonded. 

Terrain and Travel

  • Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Minimize your exposure time below cornices.
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet

Régions couvertes